<template>
  <div class="demo-date-picker">
    <div class="block">
      <el-date-picker
        v-model="value2"
        type="daterange"
        start-placeholder="Start Date"
        end-placeholder="End Date"
        :default-value="[new Date(2022, 0, 1), new Date()]"
      />
    </div>
  </div>
</template>

<script lang="ts" setup>
import { ref, watch } from 'vue'

const props = defineProps({
  modelValue: {
    type: Array,
    default: () => []
  }
})

const emit = defineEmits(['update:modelValue', 'change'])

const value2 = ref(props.modelValue)

// 监听日期变化
watch(value2, (newValue) => {
  emit('update:modelValue', newValue)
  emit('change', newValue)
})

// 监听外部prop变化
watch(() => props.modelValue, (newValue) => {
  value2.value = newValue
})
</script>

<style scoped>
.demo-date-picker {
  display: flex;
  padding: 0;
  flex-wrap: wrap;
}

.demo-date-picker .block {
  padding: 1.5rem 0;
  text-align: center;
  border-right: solid 1px var(--el-border-color);
  flex: 1;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.demo-date-picker .block:last-child {
  border-right: none;
}

.demo-date-picker .demonstration {
  display: block;
  color: var(--el-text-color-secondary);
  font-size: 14px;
  margin-bottom: 1rem;
}

@media screen and (max-width: 768px) {
  .demo-date-picker .block {
    flex: 0 0 100%;
    padding: 1rem 0;
    min-width: auto;
    border-right: none;
    border-bottom: solid 1px var(--el-border-color);
  }

  .demo-date-picker .block:last-child {
    border-bottom: none;
  }
}
</style>
